Sharon Clarke is Professor of Organizational Psychology,Head of Division and Deputy Head of School at Alliance Manchester Business School, University of Manchester, UK. Her research interests are in occupational safety, health and wellbeing, particularly safety leadership, climate and culture. She is currently Editor-in-Chief of the Journal of Occupational and Organizational Psychology and Associate Editor at the Journal of Occupational Health Psychology. She is also on the Editorial Board of the International Journal of Stress Management. Tahira M. Probst is a Professor of Psychology at Washington State University Vancouver, USA. Her research focuses on occupational health and safety, with a particular interest in the psychosocial antecedents of accident underreporting. She is currently Editor-in-Chief of Stress & Health and an Editorial Board member of the Journal of Occupational Health Psychology, Occupational Health Science, Military Psychology and the Journal of Business and Psychology. Frank Guldenmund is Ass. Professor in the Safety Science and Security Group at Delft University of Technology, the Netherlands. He works primarily in the field of occupational, process and nuclear safety, where he focusses on human behaviour in a technological environment. Within this context he developed an interest in the topic of safety culture, into which he has conducted research for two decades. He has been Associate Editor of Safety Science for many years. Jonathan Passmore (Series Editor) is the Professor of Coaching and Behavioural Change at Henley Business School, University of Reading and a professor of psychology at the University of Evora, Portugal. He is a chartered psychologist, holds five degrees, and has an international reputation for his work in coaching and leadership, including being listed by Thinkers50 as one of the top 10 coaches in the world. He has published widely books on the themes of leadership, personal development and change, and served as editor for the Association for Coaching book series. He speaks widely at conferences across the world and has published over 100 journal papers and book chapters.